How is Scottish Ale Different?

On Scottish beers CAMRA quotes;
‘Historically, Scottish beers tend to be darker, sweeter and less heavily hopped than English and Welsh ales; a cold climate demands warming beers. But many of the new craft breweries produce beers lighter in colour and with generous hop rates.

The traditional, classic styles are a Light or a 60/-; low in strength and so-called even when dark in colour; a Heavy or 70/-; an Export or 80/- and; a strong Wee Heavy, similar to a barley wine labelled 90/-. The use of the term shillings in Scottish beer relates to the 19th century, where beers were invoiced according to their strength, using the now defunct currency of the shilling’.